Switch-stand lock



March 4, 1930. P, SWANSQN 1,749,198

SWITCH STAND LOCK Filed Jan. 15, 1929 @www patented Mar; 4,1930

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j PETER swANsoN, or ELY, MINNESOTA SWITCH-STAND Loox Application med Jmiary 15,Y 1929. serial No. 332,646.y

.Y vinvention irelates to railroad switches and has'special reference to that type of Referring now tothe accompanying draw.

f switch stand'an p lock set forthin my cependingapplication SerlNo. 223,673-f f The principal objectief my presenty invention is to provide amore simple and Vefficient typeloflsuch lock,r Another object is to provide a lock in which 'the kcooperative part-carried by the head of E10 the switch stand is constantly housed therefk within to avoid'clogging bysnow or ice, and

to. diminish the liability of tampering. Y

" fOther objects and vadvantages vot the inven-k tion will appear inthe furtherrdescription thereof.' fi f l ing, forming part'of this application and wherein like yreference characters indicate l'k i ti 20 klepars Figure 1 is aside elevation of a fragmenr y rtalportion of the uppered of swtchlstand and operating'lever showing my improved 'y form `of lock attached thereto and shown "in .vertical section; 1 I l.

. n Figure 2 is a 'top' plan view of Figure l showing the lock housing in ho-rizontalsecf tion;

Figureis front elevation of the lock With a Portion of the handle in section.

1 represents a portion ofy the vertically adjustable head of a common railroad switch c lst'and, it havingiixedrthereto the extending lugcommon to such switch stands. `How- 1 .L ever, this lug is disposed somewhat different-y lyfroinfthe arrangement commonlyfemployed in -thatit is arched abnormally and designed j to be at `one end constantly inelosedwithin the housing 3 of the lock, which is, in this instance, formed integralwith the handle 4, the latter being of the common form, and the upper end being 'bifurcated At the junction of the bifurcated portion 'y of the handle with the single free extremity c l,c45` theleOf is formed a through slot 6 into which vthe'lug 2 always extends, regardless of the positionot1 the handle and this'slot opens into the interio-r of the housing 3, the latter'being "rectangular in form and oblong vertically. This lug housing or casing comprises the rectangularly shaped member 7y which is of channel shape in horizontal section and as before stated is formed integral with the handle, the open side thereof being adjacent the lug 2. 'A division wall 8 is provided in the upper end of the channel-like member 7 'and intermediate of it and the wall of said member Vis lpivotally mounted as at 9 the gravity dog 10, the oihce of which will be described laten J ust beneath the lower edge of the wall 8 is rotatably installed the horizontally disposed supporting portion 11 of the locking bolt which extends through both opposite walls of the member 7 and is provided upon its innermost Aend With a suitable holding collar 12 attachedv thereto as'byvv apin or the like. The

.locking` bolt extends loutwardly 'through the side vopposite to that upon which the collar 12 attached and turned at right angles to reach just beyond .they side wall of the housing, and thence bent at right angles parallel F with the portion 11fas at 13, thence downwardly as at 14, and again inwardly at substantiallyright angles as at 15 where it extends through an suitable hole within the low; ler extremity of the outer portion-16 ofV the housing,'i`or. automatic registration with the hole 17 inthe lug 2 when the switch is to be locked, yit being kobvious that the end 15 of the Ilocking bolt at lall times tendsto gravitate towards the lug 2,5and when not engaged within the hole 17, always slides on the side of the lug this lbeing' essential in the proper functioning of the device.

It isto be understood that vbeltore the locking lbolt is installed the outer casing 16 of the housing isv iinsty installed, 'it being telescopic ,and fitting downk completely over the member f7 and having suitable holes in the opposite walls thereof for registration with ylike holes in the walls ot the member 7 so that in the installationof the device upon a switch lever .the lhousing is completely assembled with the cooperating elements therein before the b olt is placed in positionrender1ng it impossible to getint any of the mechanism oi the lock without first removing thebolt.

As a lockingvmeans for thevbolt when. the latter is engaged with the lug 2, is provided the dog 10 pivoted as at 9 intermediate oi the wall 8 and the back of the portion 7 of the 'n 2AI A 1,749,198

lock casing. This dog has a cutaway portion l 19 which surrounds the keyhole 2O through the side thereof with its heavier end 21 tending to at all jtimes gravitate intermediate Voit"A the bolt 11 and the side wall of the casing, andy ,Y

for cooperating withsuch tendency I provide a vertial` oitaway portion 22 inthe bolt portion l1, so that whenfthebolt is inlookedrposition the free endo'f the dog 10 will drop downy in between such cutaway portion and theside wall of the housing as shown in thedrawings. This dog has an arcuately shaped arm 23 normally functioning on the oppositeside' and below the keyhole 2O permitting of free insertion of Va key in the-hole, which when`- turned upwardlyv and clockwise as viewed from thepdrawings (for .it cannot he turned otherwise due tothe lug28) willraise'the end y2l of the dog i0 and permit the lbolt to assume unlocked position, butitwill benotedy n thaty when the key is thus turnedjin vthe lock,

. the keyhole, thus positively preventing the andthe dog` raised, the lug231thereot will swing into position opposite the ylower end of key Afrom being withdrawnfromV the` hole until'v the dogis permitted toy dropfand'which cannot occur as long as thebolt remains in unlocked kposition keither byI the key or otherwise. 'n

Now in they 'embodiment here illustrated,

-with the switch lug having an elongated arcuated shaped' extension thereupon, yonce the lockl is rocked to unlocked'position `and the handle l raised, the lockingend.ofthe'` bolt'having no hole with^which to register inv ytheeXtensionl ofl the Vlug will slide thereupon,

' ed within the yhousing and in'c'onstant engagevr2. The combination witha switch stand having a lockengaging lug extending therefrom, vand an operating lever, ofa lock Yhousing carried. by the lever, thelug constantly extending therewithin. Y f

3.'Tlie combination with a switch-stand having a'lock engaging lng, extendingA theref n from, an operating lever, Vand a, rotatable locking bolt, of a lock housing oarriedlby the lever, for housing the lug and in. constant engagement therewith, said housing beingy of two cooperative parts, and means whereby l the-flocking holt when assembled within the.,

housing locks same.

T; Thefcoinh'nation with switch stand having alockengaging. lugextending theregf 'y 'f from and having a holetherein, and anop'- erating lever, of alock housing carried-,by vthe yl`ever,z`and arotatablelookingl bolt mountnment: with therlug. Y y i .n y,

Inl testimony whereoflIf-aiix `my signature'. i

and while inthis'position the key cannot lbe i removedroin-the lock, but once the handleflv yis lowered so that the locking vendoif thebolt.

is engaged within the hol`e'l7finthe lug, then the dog l0v may drop into its position fo'rretaining theb'oltfinsuch lockedk position when l i the lug 23 will swingaway from the' keyhole Y and allow the operator to remove his ke for the bolt and the same is shown, described,

From the foregoing it isevi'dent that havedevised a marked improvementover the invention described'inmy former application, my present kinvention heilig delined in theifOllowingclaims, and itwill be understood does not-include the above described locking means and claimed ink my former copending applinel shaped member, andl a rotatably locking bolt mounted in the membersandinstallable therein after assemblyof said members. j 

